Nibe SMO S40 User Manual page 14

Low hot water temperature or a lack of hot
water
This part of the fault-tracing chapter only applies if the
water heater is installed in the system.
• Closed or choked filling valve for the hot water.
– Open the valve.
• Mixing valve (if there is one installed) set too low.
– Adjust the mixer valve.
• SMO S40 in incorrect operating mode.
– Contact your installer!
• Large hot water consumption.
– Wait until the hot water has heated up. Temporarily
increased hot water capacity can be activated in
home screen "hot water" or in menu 2.1.
• Too low hot water setting.
– Enter menu 2.2 and select a higher demand mode.
• Low hot water access with the "Smart Control"
function active.
– If the hot water usage has been low for an extended
period of time, less hot water than normal will be
produced. Activate "More hot water" in menu 2.1.
• Too low or no operating prioritisation of hot water.
– Contact your installer!
• "Holiday" activated in menu 6.1.
– Enter menu 6.1 and deactivate.
Low room temperature
• Closed thermostats in several rooms.
– Set the thermostats to max in as many rooms as
possible. Adjust the room temperature via home
screen heating, rather than choking the thermostats.
• SMO S40 in incorrect operating mode.
– Contact your installer!
• Too low set value on the automatic heating control.
– Go to the Smartguide for help in increasing heating.
You can also change the heating from the home
screen heating.
• Too low or no operating prioritisation of heat.
– Contact your installer!
• "Holiday mode" activated in menu 6.1.
– Enter menu 6.1 and deactivate.
• External switch for changing room temperature activ-
ated.
– Check any external switches.
14 Chapter 6 | Disturbances in comfort
• Air in the climate system.
– Vent the climate system.
• Closed valves to the climate system.
Closed valves to the climate system or heat pump.
– Open the valves (contact your installer for assistance
in finding them).
High room temperature
• Too high set value on the automatic heating control.
– Go to the Smartguide for help in decreasing heating.
You can also change the heating from the home
screen heating.
• External switch for changing room temperature activ-
ated.
– Check any external switches.
Low system pressure
• Not enough water in the climate system.
– Fill the climate system with water and check for
leaks. In event of repeated filling, contact the in-
staller.
The air/water heat pump's compressor does
not start
• There is no heating or cooling demand, nor hot water
demand or pool demand.
– SMO S40 does not call on heating, cooling, hot wa-
ter or pool.
• Compressor blocked due to the temperature condi-
tions.
– Wait until the temperature is within the product's
working range.
• Minimum time between compressor starts has not
been reached.
– Wait for at least 30 minutes and then check if the
compressor has started.
• Alarm tripped.
– Follow the display instructions.
NIBE SMO S40